EFFECT OF NITROGEN SOURCES ON GROWTH, PRODUCTION, FRUIT QUALITY AND NUTRIENT STATUS OF APPLE CV. ROYAL DELICIOUS

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dc.contributor.advisorBHATIA, H.S.
dc.contributor.authorSINGH, DEEPIKA
dc.date.accessioned2017-08-17T12:56:18Z
dc.date.available2017-08-17T12:56:18Z
dc.date.issued2017
dc.description.abstractABSTRACT The present investigation entitled “Effect of nitrogen sources on growth, production, fruit quality and nutrient status of apple cv. Royal Delicious”, was conducted in private orchard at Denwari (Rohru) in Shimla district of Himachal Pradesh during the year 2015-16. Twenty eight years old apple trees of cultivar Royal Delicious grafted on seedling rootstock of uniform vigour. The trial was laid out in randomized block design (factorial) with four replications. The purpose of these studies were to compare the effects of various sources of nitrogen on apple growth, production, fruit quality, leaf and soil nutrient status, to find out alternate source of nitrogen for the substitution for CAN (calcium ammonium nitrate), which was recommended for Himachal Pradesh. Two field experiments were conducted simultaneously in same orchard wherein, soil application of five sources of N viz. urea, calcium nitrate, 19:19:19 + urea, 12:32:16 + urea and calcium ammonium nitrate similarly, soil application of nitrogen sources + foliar urea sprays at the three levels (840, 700 and 560 g N/tree) were tried and compared to get best nitrogen source and level of application. The data were recorded for growth, fruit set, yield, quality, leaf and soil nutrient status of apple for both the experiments and data of two years was also pooled and analysed to assess the combined impact of the treatments. On the basis of experimental results CAN at 700 g level was observed best treatment for growth, fruit set, yield and was closely followed by calcium nitrate at 700 g N/tree and urea at 700 g N/tree. Leaf N content was recorded with the treatment of urea at 840 g N/tree, whereas highest P and K content were recorded with 19:19:19 + urea at 560 g N/tree. Leaf Ca, Mg and micronutrient concentrations viz., Fe, Cu, Zn and Mn were also quantified significantly by different soil N fertilization in similar trend. Soil pH decreased with treatment 12:32:16 + urea. However, Organic carbon, soil nutrients (N, Fe, Cu and Mn) increased with urea application. Soil P and K contents increased with 12:32:16 + urea and CAN, respectively. Likewise the experimental results of soil applied N sources and levels + foliar urea sprays has observed calcium ammonium nitrate + foliar urea sprays at 700 g N as best treatment combination and was closely followed by calcium nitrate + foliar urea sprays and urea (soil) + urea (foliar) application at 700 g N level. Similarly, Leaf N content was recorded with the urea (soil) + urea (foliar) at 840 g N/tree, whereas highest P and K contents were recorded with soil + foliar treatment (19:19:19 + urea) + urea at 560 g N/tree. Leaf Ca, Mg and micronutrient concentrations viz., Fe, Cu, Zn and Mn were also quantified significantly by different soil + foliar N fertilization in similar trend. Soil pH decreased with soil + foliar application of CAN + urea, whereas organic carbon, soil nutrients ( N, Fe, Cu and Mn) increased with urea (soil) + urea (foliar) treatment. Soil P and K contents increased with soil + foliar treatment (12:32:16 + urea) + urea and CAN + urea, respectively. Since, the CAN availability is problem due to ban on its production, calcium nitrate and urea are two left out options. So, calcium nitrate or urea at 700 g N/tree as soil application and calcium nitrate (soil) + urea (foliar) or urea (soil) + urea (foliar) at 700 g N/tree are best sources based on present experiments and therefore, recommended for use by the farmers/orchardists.en_US
dc.identifier.urihttp://krishikosh.egranth.ac.in/handle/1/5810028846
dc.keywordsapple cv. Royal Delicious,growth, production, fruit quality and nutrient statusen_US
dc.language.isoenen_US
dc.publisherUHF,NAUNIen_US
dc.subFruit Scienceen_US
dc.subjectnullen_US
dc.themeapple cv. Royal Delicious,growth, production, fruit quality and nutrient statusen_US
dc.these.typePh.Den_US
dc.titleEFFECT OF NITROGEN SOURCES ON GROWTH, PRODUCTION, FRUIT QUALITY AND NUTRIENT STATUS OF APPLE CV. ROYAL DELICIOUSen_US
dc.typeThesisen_US
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