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Saran P.L.,Govind Ballabh Pant University of Agriculture & Technology | Saran P.L.,Horticulture Research and Extension Center | Kumar R.,Govind Ballabh Pant University of Agriculture & Technology | Kumar R.,Horticulture Research and Extension Center
Indian Journal of Agricultural Sciences | Year: 2011

Internal necrosis (IN) is an emerging physiological anomaly of developing mango fruits due to boron deficiency which may also lead to fruit cracking (FC). Systematic field studies were conducted in six important commercial cultivars, viz 'Dashehari', 'Bombay Green', 'Amrapali', 'Mallika', 'Lucknow Safeda' and 'Chausa' to observe the severity of IN and FC incidence. The studies revealed that out of six cultivars of mango, 'Dashehari' was most sensitive for both the disorders, while cv. 'Chausa' was most tolerant under agro-climatic conditions of Doon Valley, Uttarakhand, India. The nutrient analysis of leaf and fruit of bearing branches indicated that the IN was caused due to deficiency of boron. The N content in IN affected leaf and fruit was significantly higher in comparison to the normal samples. The high leaf N in 'Dashehari' may be a factor behind low level of leaf B and subsequent IN disorder. Foliar sprays of boron (as disodium octaborate tetrahydrate) @ 0.10% were most effective in increasing the level of B in leaf and fruits (149.64% and 120.14%, respectively) of 'Dashehari' cultivar. In all, foliar application was found to be more effective than soil application in increasing yield and reducing IN and FC disorders. The IN disorder also aggravated the incidence of fruit cracking in 'Dashehari' cultivar.

Kumar P.,Horticulture Research and Extension Center | Singh D.K.,Horticulture Research and Extension Center
Indian Journal of Agricultural Sciences | Year: 2010

The findings of the present study envisage that for feeding of the ever-growing population, farmers should go for recommended package of practices in rice and wheat cropping system without any compromise. However, resource-poor and marginal farmers who cannot afford to apply the full package should go at least one most critical factor.

Sharma S.,CCS Haryana Agricultural University | Sehrawat S.K.,CCS Haryana Agricultural University | Saran P.L.,CCS Haryana Agricultural University | Saran P.L.,Horticulture Research and Extension Center
Indian Journal of Horticulture | Year: 2011

An experiment was conducted to study the stigma receptivity, pollination, fruit set and fruit drop of guava cvs. Hisar Safeda, Hisar Surkha, Lucknow-49 and Allahabad Safeda during two flowering seasons viz., spring (April- May) and autumn (August-September) for rainy and winter season crops respectively. Stigma became receptive just after anthesis and remained receptive till 48 h of pollination in all the cultivars. Fertilization took place after 12 h of pollination and reached its peak after 72 h of pollination in relation to removal of the style. Highest fruit set and minimum fruit drop was recorded in cultivar Lucknow-49 under natural (open) pollination followed by self-pollination by hand which was observed to have more fruit set as compared to other mode of pollination viz., self-pollination by bagging and cross pollination.

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