Thumbnail Image

Kerala Agricultural University, Thrissur

The history of agricultural education in Kerala can be traced back to the year 1896 when a scheme was evolved in the erstwhile Travancore State to train a few young men in scientific agriculture at the Demonstration Farm, Karamana, Thiruvananthapuram, presently, the Cropping Systems Research Centre under Kerala Agricultural University. Agriculture was introduced as an optional subject in the middle school classes in the State in 1922 when an Agricultural Middle School was started at Aluva, Ernakulam District. The popularity and usefulness of this school led to the starting of similar institutions at Kottarakkara and Konni in 1928 and 1931 respectively. Agriculture was later introduced as an optional subject for Intermediate Course in 1953. In 1955, the erstwhile Government of Travancore-Cochin started the Agricultural College and Research Institute at Vellayani, Thiruvananthapuram and the College of Veterinary and Animal Sciences at Mannuthy, Thrissur for imparting higher education in agricultural and veterinary sciences, respectively. These institutions were brought under the direct administrative control of the Department of Agriculture and the Department of Animal Husbandry, respectively. With the formation of Kerala State in 1956, these two colleges were affiliated to the University of Kerala. The post-graduate programmes leading to M.Sc. (Ag), M.V.Sc. and Ph.D. degrees were started in 1961, 1962 and 1965 respectively. On the recommendation of the Second National Education Commission (1964-66) headed by Dr. D.S. Kothari, the then Chairman of the University Grants Commission, one Agricultural University in each State was established. The State Agricultural Universities (SAUs) were established in India as an integral part of the National Agricultural Research System to give the much needed impetus to Agriculture Education and Research in the Country. As a result the Kerala Agricultural University (KAU) was established on 24th February 1971 by virtue of the Act 33 of 1971 and started functioning on 1st February 1972. The Kerala Agricultural University is the 15th in the series of the SAUs. In accordance with the provisions of KAU Act of 1971, the Agricultural College and Research Institute at Vellayani, and the College of Veterinary and Animal Sciences, Mannuthy, were brought under the Kerala Agricultural University. In addition, twenty one agricultural and animal husbandry research stations were also transferred to the KAU for taking up research and extension programmes on various crops, animals, birds, etc. During 2011, Kerala Agricultural University was trifurcated into Kerala Veterinary and Animal Sciences University (KVASU), Kerala University of Fisheries and Ocean Studies (KUFOS) and Kerala Agricultural University (KAU). Now the University has seven colleges (four Agriculture, one Agricultural Engineering, one Forestry, one Co-operation Banking & Management), six RARSs, seven KVKs, 15 Research Stations and 16 Research and Extension Units under the faculties of Agriculture, Agricultural Engineering and Forestry. In addition, one Academy on Climate Change Adaptation and one Institute of Agricultural Technology offering M.Sc. (Integrated) Climate Change Adaptation and Diploma in Agricultural Sciences respectively are also functioning in Kerala Agricultural University.

Browse

2015 - 20174
Reset filters
Subject: Fruit Science × Author: KAU × End date: 2017 ×
Reset filters

Search Results

Now showing 1 - 4 of 4
  • Thumbnail Image
    ThesisItemOpen Access
    Nutrient management in strawberry (Fragaria x ananassa Duch.)
    (Department of Fruit Science, College of Horticulture Vellanikkara, 2017) Arjun Mohan, P; KAU; Ajith Kumar, K
    The experiment entitled “Nutrient management in strawberry (Fragaria x ananassa Duch.)” was undertaken at Regional Agricultural Research Station, Ambalavayal, Wayanad during the year 2016-17. Performance of strawberry variety Winter Dawn was evaluated under nine treatments and a control in the open field viz., FYM 10 t ha-1 + NPK 50:20:50 kg ha-1 (T1); FYM 10 t ha-1 + NPK 75:30:75 kg ha-1 (T2 ); FYM 10 t ha-1 + NPK 100:40:100 kg ha-1 (T3); FYM 20 t ha-1 + NPK 50:30:100 kg ha-1 (T4); FYM 20 t ha-1 + NPK 75:40:50 kg ha-1 (T5); FYM 20 t ha-1 + NPK 100:20:75 kg ha-1 (T6); FYM 30 t ha-1 + NPK 50:40:75 kg ha-1 (T7); FYM 30 t ha-1 + NPK 75:20:100 kg ha-1 (T8); FYM 30 t ha-1 + NPK 100:30:50 kg ha-1 (T9) and an absolute control (T10), without any nutrient application. All the treatments were on par and superior over the control (T10) in case of plant height. In case of plant spread, T2, T3, T5, T6, T7, T8 and T9 were on par and superior over the control while T1 and T4 were on par with each other but differs with other treatments. All the treatments except T2 were on par and superior over the control with respect to number of leaves per plant. Application of treatments had no significant effect on days to first flowering. In case of number of flowers and clusters per plant, T1, T2, T3, T5, T6, T7, T8 and T9 were on par and superior over the control while T4 was on par with the control (T10). Days to first harvest was minimum in T6, T7, T8 and T9 which were on par while all other treatments were on par with the control (T10).In case of number of fruits and yield per plant, T7 (FYM 30 t ha-1 + NPK 50:40:75 kg ha-1) and T8 (FYM 30 t ha-1 + NPK 75:20:100 kg ha-1) were on par and superior over other treatments including T1, T2, T3, T4, T5, T6 and T9 which were on par and superior over the control. Average fruit weight recorded under T3, T5, T6, T7, T8 and T9 were on par which was followed by T2 on par with T4 and T1. Days to final harvest was not found to be influenced by the application of different treatments. Biochemical characters of fruits viz., TSS, acidity and TSS/acidity ratio were not having any significant effect due to the application of treatments. In case of total sugars, T3, T7, T8 and T9 were having the highest content and were on par which was followed by T5 on par with T1, T2, T4, T6 and T10. The overall sensory score was highest in T7 followed by T8. Application of different treatments had no significant effect on the shelf life of strawberry fruits. N, P, K and Ca content in the plant were not significantly affected by any treatment while Mg content was found to be on par in all treatments and superior over the control. Soil analysis after the harvest of the crop revealed that the values for soil EC, available P, K, Mg and S were found to be elevated while soil pH, organic carbon and available Ca content were found to be at lower levels than the initial values before planting. It was concluded that among different nutrient combinations evaluated, T7 (FYM 30 t ha-1 + NPK 50:40:75 kg ha-1) with a BC ratio of 3.06 can be recommended for further optimization and refinement.
  • Thumbnail Image
    ThesisItemOpen Access
    Evaluation of promising strawberry (Fragaria x ananassa Duch.) varieties for Wayanad
    (Department of Fruit Science, College of Horticulture Vellanikkara, 2017) Muhammed Aslam; KAU; Ajith Kumar, K
    The experiment entitled “Evaluation of promising strawberry (Frageria x ananassa Duch.) varieties for Wayanad” was undertaken at Regional Agricultural Research Station, Ambalavayal, Wayanad, Kerala during the year 2016-17. Performance of five strawberry varieties viz., Crystal, Winter Dawn, Sweet Charlie, Sabrina and Eliyana were evaluated under open and polyhouse conditions. Maximum plant height (32.31 cm), number of leaves (26.20) and plant spread (31.41 cm) were recorded in variety Winter Dawn followed by Sweet Charlie under both growing systems. Number of flowers (16.24) and number of clusters per plant (10.13) was significantly higher in variety Winter Dawn followed by Sweet Charlie. Minimum days to first flowering were observed in the variety Crystal (45.21). Maximum number of fruits (12.04), yield (139.51 g) and earlier harvest of the fruits (63.40 days) were observed in variety Winter Dawn under both growing systems. Biochemical characters viz., highest TSS (11.54 0 B), lowest acidity (0.65 %), TSS/acidity ratio (11.3) and total sugars (6.70 %) and overall sensory score were highest in the variety Sweet Charlie followed by Winter Dawn. However, the variety Winter Dawn had better appearance and flavour. It can be concluded that among five varieties evaluated under two growing systems viz., open condition and polyhouse, Winter Dawn and Sweet Charlie are found to be better in yield and quality. Therefore, these varieties can be recommended for commercial cultivation in agroclimatic conditions of Wayanad, Kerala.
  • Thumbnail Image
    ThesisItemOpen Access
    Foliar nutrition in banana (musa AAB) nendran for enhancement of growth, yield and quality
    (College of Agriculture, Vellayani, 2015) Ardhra, Ann Paul; KAU; Jayachandran, Nair C S
    The present investigations on “Foliar nutrition in banana (Musa AAB Nendran) for enhancement of growth, yield and quality” were conducted in the Department of Pomology and Floriculture, College of Agriculture, Vellayani, Thiruvananthapuram during 2013-2015. The objective of the experiment was to evaluate the efficiency of foliar application of nutrients on growth, yield and quality of banana cv. Nendran. The following eight treatments were imposed as foliar sprays: K2SO4 (3.0%), NRC Banana formulation, IIHR formulation and a mixture of nutrients such as ZnSO4 0.5% + FeSO4 0.2% + CuSO4 0.1% + H3BO3 0.1% + (NH4)2MoO4 0.01%, ZnSO4 1.0 % + FeSO4 0.3% + CuSO4 0.2% + H3BO3 0.2% + (NH4)2MoO4 0.03%, ZnSO4 1.5 % + FeSO4 0.5% + CuSO4 0.3% + H3BO3 0.3% + (NH4)2MoO4 0.05% , 19:19:19 Fertilizer mixture (2.0 per cent) and a control (water spray on foliage) each at 2, 4 and 6 months after planting. The experiment was conducted as randomized block design (RBD) with three replications. The results of investigation revealed that treatment T2 (3.0% K2SO4) resulted in maximum height (423.08 cm) and girth (51.67 cm) of plants at bunch emergence. Highest bunch weight (9.23 kg) was recorded in T2. Other yield characters such as weight of second hand (2.07 kg), fruit length (25.75 cm), fruit weight (270.82 g) and pulp weight (195.11 g) were also found to be the highest in T2. Quality attributes such as TSS (31.50 per cent), acidity (0.32 per cent), TSS/acid ratio (102.64) and sugar/acid ratio (61.96) were also the highest in T2. Score for organoleptic qualities such as sweetness, flavour, texture, firmness, colour and over all acceptability were higher in this treatment. The same treatment resulted in higher leaf nitrogen (2.62 per cent) and potassium (3.76 per cent) content. T2 resulted in high net profit (Rs.522661 ha-1) and B/C ratio (2.05). Treatment T6 (ZnSO4 1.0 % + FeSO4 0.3% + CuSO4 0.2% + H3BO3 0.2% + (NH4)2MoO4 0.03%) resulted in more number of leaves (10.49 numbers) at bunch emergence. The treatment resulted in a bunch weight of 7.30 kg and fruit girth of 16.10 cm. In qualitative characters, T6 recorded maximum reducing sugar (16.90 per cent) and total sugar content (19.42 per cent). TSS content (30.67 per cent) which was statistically on par with T2. Organoleptic qualities were also statistically on par with T2. Leaf nutrients such as Phosphorus, Boron, Molybdenum, Iron and Zinc were also high in this treatment. It also resulted in high net profit (Rs.274241 ha-1) and B/C ratio (1.50). Regarding characters such as height of plant at bunch emergence and fruit length, T5 (ZnSO4 0.5% + FeSO4 0.2% + CuSO4 0.1% + H3BO3 0.1% + (NH4)2MoO4 0.01%) was on par with T2. However, quality characters like TSS, acidity, TSS/acid ratio, total sugars, reducing sugars, non reducing sugars and sugar/acid ratio were lower in T5 compared to T2. Organoleptic qualities were statistically on par with T2. The treatment T5 exhibited high leaf nutrient content (Nitrogen, Boron, Copper and Iron). Nitrogen content in leaf recorded in T5 was on par with T2 and Iron content was on par with T6. This treatment resulted in a net profit of Rs.247535 ha-1 and B/C ratio of 1.48. Treatment T4 (IIHR formulation) resulted in more number of fruits per bunch (39.16). Weight of second hand (1.66 kg) was also higher but differed significantly from T2, T6 and T5. High values were observed for leaf nutrients such as Nitrogen, Potassium and Zinc in this treatment. Nitrogen (2.59 per cent) and Potassium content (3.57 per cent) in leaf recorded in T4 was on par with T2. It also resulted in a net profit of Rs.245075 ha-1 and B/C ratio 1.49. The studies indicate that treatment T2 (3.0% K2SO4 as foliar application 2, 4 and 6 months after planting) can be recommended for farmers since it resulted in highest B/C ratio, yield as well as qualitative characters. However, treatments T6 (ZnSO4 1.0 % + FeSO4 0.3% + CuSO4 0.2% + H3BO3 0.2% + (NH4)2MoO4 0.03%), T5 (ZnSO4 0.5% + FeSO4 0.2% + CuSO4 0.1% + H3BO3 0.1% + (NH4)2MoO4 0.01%) and T4 (IIHR formulation-0.5% urea, 0.5% K2SO4, 0.2% ZnSO4 and 0.1% H3BO3) as foliar application 2, 4 and 6 months after planting can also be recommended for enhancing growth, yield and fruit quality in Nendran banana. Since the constitution of these treatments vary, suitable ones are to be chosen based on the deficiency of the particular nutrient.
  • Thumbnail Image
    ThesisItemOpen Access
    Population dynamics and management of mango fruit fly, bactrocera dorsalis (Hendel) (Diptera: Tephritidae)
    (College of Agriculture, Vellayani, 2015) Akhila, M U; KAU; Jiji, T
    The investigation entitled “Population dynamics and management of mango fruit fly, Bactrocera dorsalis (Hendel) (Diptera: Tephritidae)” was conducted at the College of Agriculture, Vellayani during 2013-2015. The main objective of the work was to study the host range and population dynamics of mango fruit fly and to standardize the use of alternate chemicals in Bait Application Technique (BAT) and Male Annihilation Technique (MAT) for its management. A survey was conducted in twenty homesteads of Kalliyoor panchayath having at least 25 cents and the Instructional Farm, Vellayani during 2013-2015 to study the pest incidence, extent of damage and host range of mango fruit fly. Study revealed the incidence of the B. dorsalis in three fruit crops viz., mango, guava and banana, out of the five selected. No infestation was observed in papaya and sapota. B. dorsalis preferred soursop as one of its hosts. The species emerged from mango were identified as B. dorsalis and B. caryeae (Kapoor). In guava and banana, only infestation by B. dorsalis was recorded. Infestation by other species of fruit fly was also recorded from rose apple and solanaceous vegetables viz., brinjal and tomato and the species were identified as B. syzigi and B. latifrons (Hendel), respectively. Fruit fly infestation in brinjal and tomato are new reports from Kerala. The percentage infestation in mango was higher in peak fruiting season during May (49.28) to June (61.68) and the maximum number of maggots was observed during June 2014 (82.49). Studies were conducted at ten homesteads of Kalliyoor panchayath and the Instructional Farm, Vellayani to monitor the population fluctuation and species diversity of fruit flies using methyl eugenol traps during 2014-15. It revealed the prevalence of four Bactrocera spp. viz., B. dorsalis, B. caryeae, B. correcta (Bezzi) and B. zonata (Saunders) with a species composition of 28.74, 69.85, 1.38 and 0.02 per cent, respectively. The population of B. caryeae (278.91) and B. dorsalis (124.82) reached the peak level in June 2014 which coincided with the peak fruiting season of mango. Studies on correlation with weather parameters revealed that the maximum temperature, average relative humidity and sunshine hours had a significant positive correlation with the population of B. dorsalis and B. caryeae. The biology of B. dorsalis in different mango varieties and hosts was studied. Longer pupal period (11.40 days) and maximum adult longevity (20.70 days) were observed in the mango variety Bangalora. Among the different hosts, the highest larval (12.90 days) and pupal periods (10.30 days) were recorded in banana. However, the highest adult longevity (19.70 days) was observed in mango. Field studies indicated that the activity of B. dorsalis was more (6.92 flies per trap) during 6.00 to 8.00 am. Based on the percentage mortality and LT 50 values, 10 per cent jaggery along with lambda cyhalothrin 0.005%, 10 per cent jaggery along with spinosad 0.02%, 10 per cent jaggery along with malathion 0.1% and 10 per cent jaggery along with lambda cyhalothrin 0.0025% in BAT and alcohol, lure and spinosad (6: 4: 0.2 v: v: v), alcohol, lure and malathion (6: 4: 1 v: v: v), alcohol, lure and spinosad (6: 4: 0.02 v: v: v) and alcohol, lure and deltamethrin (6: 4: 0.4 v: v: v) in MAT were selected for field evaluation. Field studies conducted in homesteads of Balaramapuram panchayath using the above promising insecticides revealed that 10 per cent jaggery along with spinosad 0.02% was effective in BAT and alcohol, lure and spinosad (6: 4: 0.2 v: v: v) was the best treatment in MAT. The study revealed that in addition to B. dorsalis, B. correcta and B. zonata and many other fruit fly species including B. caryeae, B. syzigi and B. latifrons are also becoming a great threat to crops. Considering the environmental factors, spinosad can be selected as an alternative chemical for the conventional organophosphate insecticide, malathion.