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Anand Agricultural University, Anand

Anand Agricultural University (AAU) was established in 2004 at Anand with the support of the Government of Gujarat, Act No.(Guj 5 of 2004) dated April 29, 2004. Caved out of the erstwhile Gujarat Agricultural University (GAU), the dream institution of Sardar Vallabhbhai Patel and Dr. K. M. Munshi, the AAU was set up to provide support to the farming community in three facets namely education, research and extension activities in Agriculture, Horticulture Engineering, product Processing and Home Science. At present there seven Colleges, seventeen Research Centers and six Extension Education Institute working in nine districts of Gujarat namely Ahmedabad, Anand, Dahod, Kheda, Panchmahal, Vadodara, Mahisagar, Botad and Chhotaudepur AAU's activities have expanded to span newer commodity sectors such as soil health card, bio-diesel, medicinal plants apart from the mandatory ones like rice, maize, tobacco, vegetable crops, fruit crops, forage crops, animal breeding, nutrition and dairy products etc. the core of AAU's operating philosophy however, continues to create the partnership between the rural people and committed academic as the basic for sustainable rural development. In pursuing its various programmes AAU's overall mission is to promote sustainable growth and economic independence in rural society. AAU aims to do this through education, research and extension education. Thus, AAU works towards the empowerment of the farmers.

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1991 - 19964
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Subject: Agricultural Meteorology × End date: 1999 × Start date: 1990 × Thesis Type: M.Sc ×
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Now showing 1 - 4 of 4
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    ThesisItemOpen Access
    CROP WEATHER RELATIONSHIPS AND POPULATION DYNAMICS OF Helicoverpa armigera IN TWO PIGEON PEA (Cajanus cajan L.) CULTIVARS IN MIDDLE GUJARAT AGROCLIMATIC REGION
    (AAU, Anand, 1996) RAVIPATI, MAHENDRA KUMAR; Savani, M. B.
    Pigeonpea [Cajanus cajan L.) is one of the major grain legume crop in tropical and sub - tropical regions of India and grown mainly as rainfed crop. The crop is characterised as drought resistant and the productivity is different in different environments. Since the effects of weather on yield are complex, the deep and clear understanding of the effect of weather parameters on the growth and development of pigeonpea is necessary. An experiment was conducted during the Kharif season of the, year 1994 at Anand to study the crop-weather relationship and crop-weather-pest dynamics in two cvs.BDN-2 and GT-100 of pigeonpea. The field experiment was laid out in split plot design with four replications. The treatments comprised of two irrigation levels, two plant protection levels, two varieties, and three dates of sowing. The results obtained during the course of investigation revealed that weather played significant role in growth, development and yield of pigeonpea. The variations in days taken to complete the different phenophases among the different dates of sowing were attributed due to the variations in temperature and photoperiod. The number of days required for the completion of any phenophase was declined with increase in the temperature and photoperiod. The yield and yield attributes were significantly influenced by irrigation and dates of sowing. The grain yield, biomass, and number of pods per plant were observed more in D1 than in D2, and D3. Grain yield, biomass, and number of pods per plant declined with the application of irrigation. The irrigated crop puts up more biomass initially but it was declined considerably than in unirrigated crop in the later phases due to heavy attack of the larvae of Helicoverpa. The different agrometeorological indices like GDD, PTU and HTU has positive and significant correlation with days taken for the completion of the different phenopases, eccept for the phenophase P4. The thermal time (GDD) has highly significant correlations with days taken for different phenophases. Functional relations were developed to predict the number of days required for different phenophases in both the cultivars BDN-2 and GT-100. The leaf area index (LAI) and crop growth rate (CGR) were found to be influenced by irrigation and sowing time. The crop sown in D1 maintained more LAI and CGR in both the cultivars, compared to D2 and D3, The decline in the values of LAI and CGR during flowering phase in both the cultivars was due to heavy infestation of Helicoverpa. The radiation use efficiency (RUE), on seasonal basis was found to be high in rainfed crop compared to irrigated crop. The RUE was high in D1 sown crop, and was declined in the delayed sowings. The RUE was found high in cv.GT-100 compared to cv.BDN-2. Functional relations were developed to estimate the near surface soil moisture content under developing conopics of pigeonpea using remotely sensed canopy and air temperatures, and the LAI. A linear relationship was observed between evapotranspiration and canopy-air temperature differential. The relation was found closely related, when the variations due to energy load was accounted. The populations of the eggs and larvae of the Helicoverpa were found to be highest in first date of sowing (D1) both at 50% flowering and 50% podding phases compared to D2 and D3. The cultivar GT-100 was found more succeptible to Helicoverpa due to the early flowering character than cv.BDN- 2. The larval population of Helicoverpa in pigeonpea was found significantly correlated with air temperature, vapour pressure and pan evaporation.
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    ThesisItemOpen Access
    GROWTH, DEVELOPMENT AND YIELD ATTRIBUTES OF CHICKPEA (Cicer arietinum Linn.) IN RELATION TO WEATHER PARAMETERS
    (AAU, Anand, 1996) Rao, Gattineni Srinivasa; SAVANI, M. B.
    Chickpea or Bengal gram (Cicer arietinum Linn.) is one of the most important pulse crops in India. The crop is grown in the semi-arid tropical areas of India as a winter crop on stored soil moisture from the preceding rainy season. The crop is characterized as drought tolerant and the productivity is different in different environments. Many of the crop management practices developed have focused the water management aspects, neglecting the importance of energy interception and its efficiency. An experiment was conducted at Agronomy Farm of the B.A. College of Agriculture, Gujarat Agricultural University, Anand Campus, Anand during rabi season of 1994-95, on chickpea cv. ICCC-4 on the loamy sand soil with three dates of sowing and two pest control measures with Latin Square Design. The results obtained in this investigation revealed that the air temperature had profound influence on the growth and development of the chickpea crop. The differences in the total biomass per plant, number of pods per plant and seed yield per hectare among all the treatments were significant. The number of days taken for completion of the emergence phase was negatively and significantly correlated with mean values of pan evaporation and air temperature.. Significant positive correlations were observed for the minimum air temperature, morning and afternoon vapour pressures, and morning and afternoon relative humidities, with days taken for the completion of vegetative phase. The duration of pod setting phase was found to be significantly and positively correlated with sunshine duration (BSS), pan evaporation, wind speed but negatively correlated with both the morning and afternoon relative humidities. BSS had negative association with number of days taken for completion of the pod filling phase. During the maturing phase, most of the weather parameters were found to have significant association with the number of days taken for its completion.
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    ThesisItemOpen Access
    STUDY ON PAR INTERCEPTION AND TESTING OF PLANTGRO MODEL FOR MUSTARD (BRASSICA JUNCEA L.) CROP
    (AAU, Anand, 1994) Patel, P. B.; Shekh, A. M.
    Mustard (Brassica juncea L.) is an important oil seed crop in India. Water is most often the limiting factor for mustard production and its optimum use is essential for higher yields. Evapotranspiration is an integral part of the overall water requirement' problem of any crop and its determination becomes both desirable and inevitable for better acquisition of the knowledge of water utilization by the crop. A field experiment with four depths of irrigation (T1-irrigation with 30 mm of water, Ig-irrigation with 45 mm of water, I o-irr igat ion with 60 mm of water and I4- irrigation with 75 mm of water) with four irrigations using sprinkler system each at a fixed interval was laid out in completely randomized block design during the rabi season of the year 1992-93. The results revealed that, the yield differences due to irrigation treatments were found to be non-significant. The data indicated that none of the irrigation treatments had any significant effect on the yield and yield attributing characters. The leaf area index (LAI) value was not sensitive to the different depths of moisture levels. Regression analysis between LAI and days after sowing (DAS) indicated that quadratic regression equation could fit well to predict LAI from DAS. Study on evapotranspiration indicated that total ovapotranspiration increased with increase in amount of water applied. Accumulated Stress Degree Days (SDD) values decreased with increase in amount of water applied. Correlation studies between dry matter production and intercepted photosynthetically active radiation (IPAR) indicated high positive correlations. Studies on intercepted photosynthetically active radiation (IPAR) indicated that IPAR use efficiencies ranged from 2.44 g MJ-1 in I2 treatment to 2.55 g MJ-1 in I1 treatment. The extinction co-efficient (K) calculated by using incident photosynthetically active radiation (PAR) and transmitted PAR showed a value of 0.87.
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    ThesisItemOpen Access
    STUDIES ON SOME ASPECTS OF THERMAL AND RADIATION REGIMES ON GROWTH AND DEVELOPMENT OF TWO WHEAT SPECIES (Triticum aestivum, Linean and Triticum durum, Linean) AT ANAND
    (AAU, Anand, 1991) CHAUDHARI, G. B.; SAVANI, M. B.
    Thermal and radiation regimes are the most vital factors for influencing the plant responses for growth and development that govern the productivity of crops in the field. The most important weather variables influencing the plant growth and development are temperature, radiation and moisture. An experiment was planned and conducted in the year 1989-90 at Anand to assess the requirement of accumulated values of day and night hours thermal time, growing degree days (GDD), photothermal unit (PTU) and photosynthetically active radiation (PAR) for the completion of the different developmental phases and maturity of the wheat crop. The statistical analysis on the data of grain yield of the wheat crop revealed that the dates of sowing were significant and varieties and their interactions with the dates of sowing were found non-significant. The results of analysis of biomass showed high significant differences in dates of sowing, varieties as well as in their interactions wheat variety Raj-1555 (V2) produced higher grain yiela while variety Lok-1 (V1)produced higher biomass yield as compared to each other. The meteorological indices of thermal regime viz., day and night hours thermal time, GDD, PTU and prevailing period of the maximum temperature were negatively correlated with grain yield which revealed that as the value of accumulated thermal indices increases, the grain yield of wheat decreases. The relative performance of the various agrometerological indices representing the thermal regimes in explaining the growth behaviour of wheat crop at Anand was such that all the indices behaved more or less equally well in respect of their accumulated values at the maturity stage. However PAR and GDD had showed less variations in all the phases, than the variations observed in other meteorological indices. The variation in the accumulation of thermal indices decreases with the advancement of growing season towards maturity of the crop and hence the later stages of crop growth could be used more accurately for prediction of grain yield. High correlation (r = 0.96) between the values of PARM and RSM (Solar radiation) was observed. The values of average ratio between PARM and RSM was obtained as 0.41. The maximum dry matter production per unit absorption of PAR by canopy was observed in the milking stage of the crop growth in both the varieties.The average conversion efficiency was worked out on the basis of requirement of equivalent incident energy to produce one gram of biomass. The values were 0.80 and 0.69 per cent for varieties V1 and V2 respectively The photosynthetic efficiency was observed to be associated with the higher dry matter production. Crop growth analysis was carried out in terms of crop growth rate (CGR) based on number of days and growing degree days. The values of average crop growth rate (CGR) were observed as 9.15 and 7.97 gm m-2 day-1 for varieties V1 and V2 respectively. The CGR based on GDD, the values were obtained as 0.538 and 0.478 gmm-2 GDD-1 for varieties V1 and V2 respectively. On an average the highest crop growth rate was observed in the flowering stage of the crop growth for both the varieties V1 and V2.