Effects of foliar applied macro (NPK) and micro nutrients (Fe, Mn, Zn, Cu and B) at different time on yield, quality and benefit: cost ratio of rainy and winter season guava were evaluated in north western Haryana, India. The two season’s data depicted that physico- chemical characters with respect to fruit set, fruit retention, fruit size, average fruit weight and yield were significantly increased with foliar application of macro and micro nutrients at vegetative, flowering and fruiting stage (T7). The shoot C: N ratio was also found highest with T7 foliar treatment which was followed by T5 in both the seasons. The T7 foliar spray resulted in maximum benefit: cost ratio in both the seasons. Proper fertilization strategies can help fruit growers to get good yield and quality fruits.
Bangladesh J. Bot. 50(4): 1159-1164, 2021 (December)
A field experiment was conducted at fruit orchard, Department of Horticulture, CCS HAU, Hisar to standardize the optimum level of water and NPK fertilizers through drip system for the sustained production of Kinnow mandarin under semi-arid condition of Haryana. The experiment was designed in factorial RBD with three replications and consisted of twelve treatment combinations, involving of three drip irrigation regimes (1.0, 0.8 and 0.6 volume of water) and four RDF levels of NPK (120%, 100%, 80% and 60% RDF). Significantly highest gain in plant growth parameters viz., plant height (48.8 cm), stem girth (6.24 cm) and plant spread (40.1 cm) was observed with the combined application of drip irrigation at 1.0 volume of water and 120% RDF through fertigation, whereas, highest number of fruits (515.9) and yield per hectare (258.7 quintals) was registered with the interaction effect of 0.8 volume of water and 80% RDF through drip irrigation.
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