05205nam a22002057a 4500 141242 141242 OSt 20220404133726.0 220404b ||||| |||| 00| 0 eng d 631.4 VEN/MA P Venkata Ramana Magnesium and boron nutrition of black pepper (Piper nigrum L.) in laterite soils Padannakkad Department of Soil Science and Agricultural Chemistry, College of Agriculture 2014 144p. MSc. The present investigation on"Magnesium and boron nutrition of black pepper (Piper nigrum L.) in laterite soils" was carried out at the College of Agriculture, Padannakkad and Pepper Research Station, Panniyur during 2013-14 to asses the effect of magnesium and boron on available nutrient status of soil, yield and quality of black pepper. Two pot culture and two field experiments for soil and foliar application were laid out separately in CRD and RBD respectively with 9 treatments replicated thrice. Different dOset of MgS04 @ 0, 20 and 40 g vine-I as soil application in pot culture experiment and 0, 100 and 200 g vine" as soil application in the field experiment and 0, 0.5% and 1% foliar spray in the pot and field experiments and bor~ @ 0, 2 and 4 g vine" as soil application in pot culture experiment and 0, 20, 40 g vine" as soil application in field experiment and 0, 0.5% and 1% foliar spray in pot and field experiments were tried. In the pot culture experiment where Mg and B were applied to black (bush) pepper, variety Panniyur-I as soil application, the growth parameters like number of leaves, number of branches and leaf area were significantly influenced by the different treatments and the highest values were recorded in treatment receiving 40g MgS04 and 4g borax. The treatments could not significantly influence the available N status of soil. The available nutrients in soil viz. K, Ca, Mn, Zn and Cu were found to be the highest in treatment receiving 40g MgS04 and 4g borax. The effect of various treatments on B content in soil and leaves at 6th and 9th months after planting was found to be significant. Treatment receiving 40g MgS04 and 4g boraxwas superior to all other treatments. Similar trend of results were also obtained for Mg content in soil and plant of pepper leaves. The yield parameters like number of spike per vine, number of berries per spike, berry yield and spike yield were increased by application of Mg and B with the highest value in the treatment receiving 40 g MgS04+ 4gborax.The highest oleoresin content of 11.66%and the highest piperinecontent was obtained in the same treatment. In pot culture experiment involving foliar application, treatment receiving 1 % MgS04+ 0.5% borax recorded significantly higher number of spikes, number of berries per spike, 100 berry weight and berry yield.With respect to available nutrient status of soil, this treatment was superior to all other treatments for N,P,K,Ca,Fe,Mn and Cu. The Band Mg status of soil and plant was also highest in the treatment receiving 1 % MgS04 and 0.5% borax at both stages (6, 9 MAP).The application of 1% MgS04+O.5% borax recorded maximum berry yield of 120.7 g plant" A similar trend of results was obtained with respect to spike yield and qual ity parameters. ( The results of field experiment involving soil application of Band Mg clearly indicated that application of 200g MgS04+ 20g borax was superior to all other treatments with respect to number of berries, spike length, spike yield, number of spikes per m2and oleoresin content. With respect to available nutrient status of soil also the same treatmentgave significantly higher available P, K, Ca, Mn and Cu compared to all other treatments. The Band Mg status of soil and plant at berry formation stage was also highest in treatment receiving 200g MgS04 and 20g borax In field experiment where the treatments were applied as foliar spray, the treatment receiving 0.5% MgS04 and 1 % borax recorded significantly higher spike yield, number of berries, number of spikes per m2,boron and magnesium content of soil and plant and oleoresin content. The piperine content was not significantly influenced by the treatments. The results of the experiments involving soil and foliar application of Mg and B clearly indicated that in the case of soil application, application of 40g MgS04+4g borax in pot experiment and 200g MgS04+20g borax in field experiment significantly influenced the available nutrient status of soil, yield and yield attributes of black pepper. In the case of pot experiment involving foliar application, the use of 1 % MgS04+O.5% borax was superior with respect to available nutrient status, yield and yield attributes of black pepper. Application of 0.5% MgS04 + 1 % borax produced on par results. In the case of field experiment, the treatment receivingO.5% MgS04 + 1 % borax was superior to all other treatments. Soil Science and Agricultural Chemistry R Gladis (Guide) http://krishikosh.egranth.ac.in/handle/1/5810026995 ddc TH 0 0 0 1 REF KAUCLV KAUCLV THESES 2014-12-10 0 631.4 VEN/MA 173393 2014-12-10 00:00:00 2014-12-10 TH