INFLUENCE OF PRUNING AND NITROGEN APPLICA TION FOR REJUVENATION OF SENILE PEACH [ Prunus persica (L.) ((LL..)) (L.) Batsch cv. EARLY WHITE GIANT ..
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Date
2016
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Abstract
ABSTRACT The present investigation entitled “Influence of pruning and nitrogen application for rejuvenation of senile peach [Prunus persica (L.) Batsch] cv. Early White Giant” was conducted in the farmer’s field at Neri kotli Village in Rajgarh area of Sirmour district of Himachal Pradesh during the year 2015-2016. Twenty two years old experimental trees were subjected to 10 treatments viz. T1- Dehorning at 1.5 m + 100% RD of NPK, T2-Dehorning at 1.5 m + 150% N + RD of PK, T3-Dehorning at 1.5 m + 200% N + RD of PK, T4-Dehorning at 1.25 m + 100% RD of NPK, T5-Dehorning at 1.25 m + 150% N + RD of NPK, T6Dehorning at 1.25 m + 200% N + RD of NPK, T7-Dehorning at 0.75 m + 100% RD of NPK, T8-Dehorning at 0.75 m + 150% N + RD of NPK, T9-Dehorning at 0.75 m + 200% N + RD of NPK and T10-Normal Pruning with RD of NPK . The results of the present investigation revealed that among different dehorning levels and nitrogen applications, the best results in terms of increase in trunk girth, tree height, plant spread, leaf area, leaf N nutrient content, soil N content and soil K content were obtained with treatment T9 where dehorning level was 0.75 m and double dose of nitrogen coupled with recommended dose of phosphorus and potassium was applied. However, the best results in terms of cumulative yield, yield efficiency, best grade fruits (3- layer grade), fruit weight, fruit size, pulp stone ratio, sugars content, TSS and sugar acid ratio were obtained with the treatment T4 where dehorning level was 1.25 m and recommended dose of nitrogen, phosphorus and potassium was applied.
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peach [Prunus persica (L.) Batsch] ,pruning and nitrogen,HP