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20172
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Subject: Horticulture × End date: 2017 × Start date: 2017 × Type: Thesis × Thesis Type: Ph.D ×
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    ThesisItemOpen Access
    Effect of different levels of nutrients and irrigation through drip system in Kinnow
    (CCSHAU, 2017) Vijaya H M; Godara, R.K.
    The field of investigation entitled “Effect of different levels of nutrients and irrigation through drip system in Kinnow” conducted in two experiments, i.e., (i) Effect of irrigation level and NPK fertigation on growth, yield and quality of Kinnow and (ii) Effect of micronutrients application through drip on growth, yield and quality. The Experiment-I and Experiment-II were undertaken in the Experimental Block of Department of Horticulture, CCS HAU, Hisar and in farmer’s commercial Kinnow orchard at Dhani Majra Village, Fatehabad District, respectively, from February 2014 to January 2016. The Experiment-I comprised of three drip irrigation levels viz., 1.0V, 0.8V and 0.6V of water along with four recommended dose of fertilizers viz., 120%, 100%, 80% and 60% of recommended dose of fertilizers. Interaction effect of drip irrigation and drip-fertigation had significant influence on growth characters viz., plant height, stem girth and plant spread. The statistically maximum fruit yield (272.30 q ha-1) and nutrient use efficiency (142.80 kg kg-1) were recorded with 0.8V water along with 80% of recommended dose of fertilizers. The leaf N, K and Fe composition was statistically higher in the same treatment combination. The leaf P was highest when irrigation at 1.0V was combined with 120% RDF. Total chlorophyll content in leaves was maximum with combined application of 0.8V water and 120% RDF. The overall results of this study indicated that the application of 0.8V of water with 80% RDF through drip system could be productive with sufficient available nutrient for Kinnow production under semi-arid condition of Haryana. The Experiment-II on micronutrients application comprised of six treatments, viz., T1- FeSO4 42g + MnSO4 21g + ZnSO4 14g, T2- FeSO4 84g + MnSO4 42g + ZnSO4 28g, T3- FeSO4 126g + MnSO4 63g + ZnSO4 42g, T4- FeSO4 168g + MnSO4 84g + ZnSO4 56g, T5- Foliar spray of 0.5% each of FeSO4, MnSO4, ZnSO4 + 1 % Urea and T6- Control (No micronutrients). T1 to T4 treatments were applied into soil in four equal split doses. Foliar spray was also carried out four times at the time of soil application of micronutrients. All micronutrients treated plants produced higher plant growth, fruit yield and superior quality fruits over control. However, foliar application of micronutrients significantly outyielded (289.40 q ha-1) the other treatments. Statistically higher level of leaf nutrients such as N, P and Zn were extracted with foliar application.
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    ThesisItemOpen Access
    Studies on canopy management practices in high density planting of guava (Psidium guajava Linn.) cv. Hisar safeda
    (CCSHAU, 2017) Shashank Singh; Devi Singh
    The present investigation entitled “Studies on canopy management practices in high density planting of guava (Psidium guajava Linn.) cv. Hisar Safeda” was carried out at experimental orchard, Department of Horticulture, CCS Haryana Agricultural University, Hisar during the year 2014-15 and 2015-2016. There were three treatments, i.e. pruning, pinching and spacing. The guava trees were pruned at four different levels, i.e. 20%, 40% and 60% removal of shoot and no pruning (control) was done in the month of April and plants pinched with three pinching numbers, viz. no pinching, one time pinching (first week of August) and two times pinching (first week of August and first week of October) were done on the pruned plants planted at four plant spacing, i.e. 5x2, 5x3, 5x4 and 5x5 m. All the treatments were effective in managing the growth characters, however, pruning at the level of 60% and two times pinching were found most effective in increasing the growth characters, viz. shoot length and stem girth over control, while number of sprouts per shoot was recorded maximum in plants receiving 20% removal of shoot. The growth characters, viz. plants height, plant spread and tree volume was significantly reduced by various pruning and pinching treatments. Yield characters, viz. number of fruits and yield per plant were recorded maximum in control plants with no pruning, however, one time pinching recorded maximum yield per plant during rainy season. However, 60% removal of shoot and two times pinching were found most effective in improving the yield characters in terms of average fruit weight and fruit volume, while 40% removal of shoot and two times pinching were found most effective in improving the number of fruits and yield of guava during winter season. Quality parameters in terms of TSS, acidity, ascorbic acid, total sugars and pectin content were recorded maximum in plants receiving 40% removal of shoot, whereas, plants receiving one time pinching produces best quality of fruits during rainy season, while during winter, plants subjected to two times pinching produces best quality fruits in terms of TSS, acidity, ascorbic acid, total sugars and pectin content. Leaf content, viz. NPK was recorded maximum in leaves taken from plants receiving 60% removal of shoot and two times pinching during both the seasons. In all planting density, the plants grown at 5x5 m proved its superiority for growth, yield and quality characteristics in guava.