THE EFFECT£OF DIFFERENT RATES OF KALIUM AND DIFFERENT COMBINATION RATES OF NAND P ON 3, VARIETIES OF WHEATS

During lQS3-86 a 24-repli 'cation experiment on seeds and fertilizer 5 was laid out. in two areas of Esfahan provt nee (Bra-an & Mah-yar ) Three seeds, three rates of kalium and three nitrogen and phosphorus combinations were tested in, 27 plots. The seeds were ; Adl , Azadi & Roshan . The kalium Rates were zero, 50 & 100 kglHec(8l'J'Se'dunPure kalium ) and eventually, the Nitrogen and phosphour were 90-60 , 135-60 and 135-90 . This was carried out in three years and each year four replication' in each area The Summary results are as rc,llowing: 1. Me.h-y a r r In s p t te of displacement of experimental site the characteristics of soil were not of great differences. The texture was somewhat heavy. The E.C was between 6.7 and8.2 me/lit The O.C was ranging from 0.32 to 0.78% _ The total N was varied from 0.042 to 0.074% t lThe) kaluimls) ranging between 295 and 595 PPM and !.?f) phosphorus 17 to 22 PPM. In one year the effects of Nand P in various levels were "low in the final yield. But in two-year cous i der a tton the 135-60-0 treatment showed . an -increase of 400 and 600 kg/hec that statistically is of significance . On the variety Adl ; the 135-60-0 treatment; on Azadi 135-90-0 and on Roshan one yea r 90-6,0-0 and during two years 135-90__0 were the best treatments. Using different rates oJJduring two years induce no changes yields. But inane year using 100 kg/hec Compatred t, 50 and 0 increased the yield for a meaningful level. The yield of Azadi duri.ng all the three years was more than the others .The production of straw in Roshan was maximum and Nitrogen was distinguished the cause. Usi.ng kalium induced no changes. 2. Bra-an: In Bra-an the experiments were laid out in soil and water station for all the three years so the changes induced by the loea tion were neg lig ib Ie . The texture of soil was somewhat heavy,PH about 8.2 .EvC ranging from 1.2 to 1.9 MEq/lit , O.C between 0.59 and 0.9% , kalium between 240 and 290 and phosphorus vari e d from 15 to 18 PPM. The restrictions were only induced the def ic i ency rate of P and N not only didnot have any positive response but also decreased the production in one year. About k a l i umjt he increase wasnot of great importance. The variety Az adi had the maximal production comp aired with the others. . and this is statistically significant. Adl in comparison to the Roshan had more production. The effects of Nand P on different varietis were the same. In the po int of straw production the variety i\\ Roshan was the best u and the more N was used the rn.or e straw was produced. Use of 50 kg kalium increased the straw but 100 kg decreased the production. 'In addition to Ane lyz tngnne a nnua l outcomes,separately, the results of the whole three years were considered on men. weight grains. The results of each r eg ion are as following. In Mah-yar Although the d tffer ences among the annual results of each variety. ~ renot simi1ar , It is recognized that the second year outcomes are mea.ningfully less than the two. The effects of N & P were different F3 & F2 comprise- one group and the Fl is one by itself. and the changes i.nduced by kalium each year is of statistical significance. The interactions between N and P with variety also kalium a n d variety were not significant in the carried out analyses. In Bra-an The Azadi outcomes were significantly more than the others . Add it iorra lly, There were s i.gn if ice.nt interactions between yeaTs and varieties. The effects of N and P and of kalium i.n different years and varieties were almost similar and changes arenot detectable. The following interactions in this station were not noticeable: N and P with varieties . N and P with years. N and P and variety with years. N and P with years and variety . varieties with each other. varieties with years. N and P with kalium.