نشریه یافته های نوین کشاورزی
سال دهم شماره 4 (پیاپی 40، تابستان 1395)

In order to examine the effects of different levels of nitrogen and phosphorus on yield quality and quantity of safflower in the Sistan region in 1389-90 experimental field research station of Agriculture and Natural Resources Zahak was performed. Factors examined included from urea source nitrogen levels in the order N1 (control), N2 (80 kg/ha), N3 (160 kg/ha) and N4 (240/ha kg) to 1/3 before planting, 1/3 Phase out the rosette and 1/3 prior to flowering and phosphorus the three levels and the P1 (control), P2 (75 kg/ha), P3 (150 kg/ha) were before. A factorial experiment in randomized complete block design with four replications was conducted on the phenomenon of safflower varieties.
Based on the results of variance analysis for seed yield and oil yield nitrogen use at the level of %1 and %5 and %1 level for phosphorus and nitrogen in oil for %5 level was significant.In this study, the highest seed yield, oil percentage and oil yield to treatment N3P2 (consumption of 160 kg nitrogen and 75 kg phosphorus per hectare) of 4067 kg/ha, %26/81 and 1089 kg/ha and minimum of the control N1P1 (no consumption of nitrogen and phosphorus) of 2208 kg/ha, %25/07 and 552/7 kg/ha, respectively. The seed yield variation, oil percentage and oil yield from the second relation follows that with increasing amounts of fertilizer nitrogen and phosphorus compounds are more bearish trend was observed in these traits. In experiments conducted greatest height, boll number per plant and biological yield the highest levels of nitrogen and phosphorus fertilizer treatment N4P3 (consumed 240 kg N and 150 kg P per hectare) rate 134/4 cm, 12/90 boll and 18050 kg/ha and the least rate of control N1P1 101/4 cm, 5 boll and 11270 kg/ha, and citing surveys taken treatment N3P2 with 47/53 g most and treatment N1P1 with 45/03 g lowest seed weight had the highest proportion.

In order to determine the effect of humic acid and potassium fertilizer on the fresh and dry weight of heath and root dry weight , Length of root and Leaf Area Index (LAI) of mention plant, there was an Experiment using the plan of Compeletly Randomized Block Design with 3 replications and 12 treatments raised on factorial.the factors was 4 level of humic acid (0,5,10,15 kg/ha) and 3 level of potassium sulfate (0,50,100 kg/ha). During the experiment , Leaf Area Index, as well as plant fresh and dry weight , Length of root and root dry weight was measured and analyzed. Results showed that the positive effect of humic acid and potassium on Leaf Area Index by plant and increase dry and fresh weight ,root dr weight and Length of root . That treatment who had received the most amount of humic acid had significant difference in comparision of other treatments. Comparing treatment who had received the most amount of "Potassium" had significant difference too. Comparing interaction between treatments, also indicate that treated plants with the highest amount of humic acid and putassium, had significant difference in comparision of other treatments.

The effect of the date of planting, plant density, and the various of level of nitrogen on the quantitative and qualitative performance of spring safflower were investigated in the
The experiment was conducted based on split-plot factorial in a randomized complete block on the 4 repetitions. Treatment includes to dates as a delayed cultivation: 20 May and 20 June . we used different level of nitrogen include 138, 92 and 46 Kg. Nitrogen is source of urea . Plan density were 400 and 800 thousands plants per hectare. The highest grain yield is 1301 kg ; and the maximum yield is 3101kg on the June 20.
Our results show that we have better performance on May 20 because of better use of environmental conditions. The best time for delayed cultivation on the May 20th in Arak. Density have significant effect on the safflower’s performance. According to our results, the density of 800 thousands in per hectare has direct effect on the performance of the safflower compared to the 400 thousands in per hectare.

Intercropping on the basis of potential environmental in areas where inputs such as land and water constraints faced by planting two or more crops are used repeatedly and in combination. In order to evaluate the effect of intercropping of maize the KSC 704 with two kinds of beans the Sunrise (Phaseolusvulgaris) and Cowpea Mashhad cultivars (Vigna unguiculata) The amount of dry matter forage production and quality testing in a randomized complete block design with split plot with five treatments and three replications during 2009-2010 in the field of Islamic Azad University of Mashhad. Intercropping in terms of the percentage ratios are 00: 100, 25:75, 50:50, 75:25 and 100: 00, respectively. The study characteristics included , forage fresh and dry weight, leaf area produced by plants, land equivalent ratio (LER), protein and fiber yield of forage. The results showed that land equivalent ratio (LER), in all intercropping treatments that represent more than a single ship intercropping advantage. Dry matter yield in intercropping system more than monoculture corn. Legumes in intercropping reduced leaf area But leaf area increased corn planting ratio of 75:25. Intercropping with cowpea compared with common beans effect on increased forage protein content than the monoculture system. Crude fiber content, in intercropping to monoculture corn, which increases the palatability of forage was reduced. The results showed that intercropping with cowpea good way to feed a high quality and quantity. Considering the forage yield and forage quality best planting ratio was as 75:25. The highest land equivalent ratio (LER) was obtained in this treatment.

This study was laid out in order to investigate the effect of foliar application of humic acid and seaweed on yield and quality of alfalfa (cv. Hamedani) forage in Hamadan region at 2016.This experiment was conducted as a factorial arrengment based on randomized complete block design with three replications. Treatments were humic acid in concentrations of (0, 1, 2.5 and 5 L.ha-1) and seaweed extract in four levels (0, 250, 500 and 1000 g.ha-1).The results showed that the effects of seaweed and humic acid were significant on plant hight, number of leaf per plant, number of stem per surface unit, wet and dry foriage yield and percentage of crud protein and soluablesugars.Also the interaction effect of humic acid and seaweed was significant on plant hight, number of leaf per plant and soluable sugar percent only.The data comparison means shows that with increasing of seaweed and humic acid concentration the plant height was increased.The highest number of stem per surface unit was obtained in 1 kg.ha-1 seaweed treatment. Foliar application of 5 kg.ha-1humic acid increased number of stem per surface unit as 17 percent compared to control treatment.Dry and wet foriage yield increased significantly by foliar application of humic acid and seaweed.Maximum wet foriage yield (30 ton.ha-1) was obtained in 1000 g.ha-1 seaweed that increasd as 16% compared to control. Maximum and minimum wet foriage yield (29.79 and 23.99 t.ha-1) was related to application of 2.5 kg.ha-1humic acid and control treatments respectively.The maximum crud protein (12.23%) was obtained in 1000 g.ha-1 seaweed and 5 L.ha-1humic acid treatments. Also foliar application of humic acid and seaweed increased soluable sugars compared to control treatment. In final, the present resulta shows that foliar application of humic acid and seaweed increased quantity yield and quality of alfalfa in Hamedan region.

In order to evaluate response of quantity and quality traits of forage maize to macroelements and zinc in the common agricultural and ecological systems, an experimental carried out as split plot design a randomized complete block with four replications in the village of Qara-Chai that khondab city located. The main plots included in organic and chemical fertilizer treatments at six levels: 100, 75 and 50% NPK fertilizer recommended by the laboratory, 75% NPK fertilizers 10 t/ha manure, 50% fertilizers NPK 25 t/ha manure, 40 t/ha of manure, and subplots sprayed with different concentrations of zinc sulfate in three of control (no spray), sprayed with zinc sulphate two and four per thousand. Results showed that maximum forage yield 92291 kg/ha was recorded from 40 t/ha manure that with 75% NPK fertilizers combined with application of 10 t/ha manure with forage yield equal to 88845 kg/ha was no significant difference. The foliar application of zinc at a concentration of 4 per thousand, the highest yield (87379 kg/ha) were produced. The highest protein content (12.59 %) was obtained from treatment 40 t/ha of manure. The foliar application of zinc sulfate at concentration of 4 per thousand showed that highest protein content (18.73%). foliar application of two and four per thousand zinc sulfate concentrations increased the grain yield by 8, 9 and 23.08 % compared to the control. The maximum of zinc concentration (47.13 mg/kg) was recorded from application of zincsulfate at the rate of 4 per thousand. In general, results showed that application of 75% NPK recommended combined with 10% t/ha manure along with foliar application of 4 per thousand zinc sulfate can obtain good quantitative and qualitative yield.