تاثير رش النتروجين والكالسيوم في نمو وانتاج نبات الرقي (Citrullus Lanatus )

Abstract

Abstract :- An experiment was conducted in Musiab – progect lands Babylon Goverment during the spring season of 2010 on watermelon plant var. ''Charleston gray'' to study effect of nitrogen and calcium spraying and their interaction in characteristics of growth and production . This experiment include two factors , first – spraying nitrogen at four concentration (0 , 2000 , 4000 , 6000 ) mg NL(N0, N2 , N4 , N6 ) as urea (46% N) , the second – spraying calcium at four concentration also (0 , 100 , 200 , 300 ) mg Ca L (Ca0 , Ca1 , Ca2 , Ca3 ) as calcium chelated (9% Ca) by using factorial experiment (4x4 ) with three replicates , An randomized complete block design (R.C.B.D.) was used Results showed that average of plant length , number of branches , number of branches, number of leaves , leaf area , total chlorophyll , dry mater were the highest at the interaction of nitrogen and calcium (N6Ca3) that were (431.09 cm , 8.10 branch plant , 1522.62 leaf , 4.99m2plant, 153.13 mg 100 gm , 384.51 gm for plant respectirely , while 317.24 cm , 6.31 branch plant , 761.22 leaf , 2.66m2 plant , 91.67mg 100gm and 237.39 gm plant respectively in control The interaction treatment (N4Ca3) gave the highest increased in character of length , diameter and fruit weight from another treatments were 39.36cm , 18.37cm , 4.88 kg plant respectively , with the largest number of fruit at the interaction of (N0Ca3) were 1.45 fruit plant , and the highest production of plant at (N6Ca3) were 30.17 ton h. while they were 19.05 ton h. in control treatment ..