BACKGROUND: The macro and micronutrients play an important role in the crop nutrition and thus they are important for achieving higher yields, better growth and development of plants.OBJECTIVES: This study aimed to investigate the effect of supplemental nutrition (chemical and organic fertilizer) on quality parameters and grain yield of wheat cultivars under irrigation condition with drain water of farms.METHODS: This experiment was carried out as a split-split plot in a randomized complete block design with three replications. The treatments included irrigation at two levels of drain water and pure water irrigation in the main plot, fertilizer compounds at six levels, growth promotion and high potassium in sub-plot and sub-sub plot including wheat cultivars (Mehregan, Shoosh, and Chamran2).RESULT: The results indicated that the traits of grain yield, harvest index, number of tillers, number of spikelet per spike, number of grain per spike were affected by fertilizer treatment and grain yield, biological yield, and harvest index were affected by irrigation. The number of grains per spike in irrigation with pure water had a higher average. The highest thousand grain weight and the number of tillers were obtained in Chamran2 cultivar. The highest grain protein content was achieved in Mehregan cultivar. The results of correlation analysis revealed that the number of tillers had a significant direct correlation with the variables of number of spikelet per spike, number of grains per spike, and grain yield. In examining the interaction of treatments, the highest grain yield was obtained in the application of humic acid seed inoculation and growth promotion of Shoosh wheat cultivar under drain water irrigation.CONCLUSION: the highest amounts of grain yield were obtained approximately 6925 kg per hectare by applying humic and growth-promoting fertilizers in irrigation conditions with drain water of fields in Shoosh wheat cultivar. پرونده مقاله

BACKGROUND: Humic acid is a natural polymeric composition which is produced as a result of decaying organic matters in soil, peat and lignin to increase crop product. OBJECTIVES: Assessment the effect of different irrigation regime and humic acid on red bean production and correlation coefficient between measured traits. METHODS: Current research was done via split plots experiment based on completely randomized blocks design with three replications. Main factor consisted irrigation halt at three levels (I1: Complete irrigation or control, I2: halt irrigation at flowering stage, I3: halt irrigation at pod stage) and humic acid foliar application dosages at three levels (H1: Control, H2: using 1.5 L.ha-1, H3: 3 L.ha-1 humic acid) belonged to subplots. RESULT: The effect of irrigation halt and humic acid on biological yield, seed yield, harvest index, number of pods per plant and seeds per pod and 100 seed weight were significant. Mean comparison result of interactions effect of treatments revealed the highest seed yield (3758.4 kg.ha-1) was in complete irrigation with 3 L.ha-1 humic acid consumption and the lowest one (2170.1 kg.ha-1) belonged to irrigation halt at flowering stage. So, this reduction in the irrigation at flowering stage was about 6% by consumption of 3 L.ha-1, and was improved to 38%. CONCLUSION: flowering stage is the most critical stage of growth of red beans in response to irrigation regimes and foliar application of humic acid could be used as a new method to decrease damage caused by halt irrigation, so halt irrigation in pod stage with use 3 L.ha-1 humic acid is recommended to achieve maximum yield. پرونده مقاله

BACKGROUND: Nitrogen is a crucial component of plant nutrition, and its deficiency limits productivity of crops more than any other element. Organic fertilizers have an effect on the quantity and quality of carbon and soil capacity in storing and releasing nutrients needed for plant growth during process of decomposition and mineralization. OBJECTIVES: This study was done to assessment effect of different levels of amino acid and Nitrogen macro nutrient on seed yield and its components of Wheat crop. METHODS: Current research was carried out via factorial experiment based on randomized complete blocks design (RCBD) with three replications along 2022-2023 agronomic year. The treatments included Amino acid (nonuse or control, 1.5, 3 and 4.5 L.ha-1) and Nitrogen fertilizer from urea source (100% equal 300 kg.ha-1, 70% equal 210 kg.ha-1 and 40% equal 120 kg.ha-1). RESULT: Result of analysis of variance revealed effect of different level of Amino acid, Nitrogen fertilizer and interaction effect of treatments (instead harvest index) on all studied characteristics was significant. Assessment mean comparison result of interaction effect of treatments on all measured traits indicated the maximum amount of number of spike per m-2 (390.5), number of seed per spike (41.30), 1000 seed weight (42.75 g), seed yield (460.70 g.m-2) and biologic yield (1377.44 g.m-2) were noted for 4.5 lit.ha-1 amino acid and 100% Nitrogen (Also it doesn’t had significant differences with 70% Nitrogen) and lowest amount of mentioned traits belonged to nonuse of amino acid and 40% Nitrogen treatment. CONCLUSION: The use of foliar application of amino acids along with nitrogen chemical fertilizer can reduce the consumption of nitrogen chemical fertilizer in addition to producing sufficient crops, which significantly contributes to the health of the environment and is an important strategy in the direction of moving towards sustainable agriculture. Therefore, by using 70% of urea fertilizer along with 4.5 liters per hectare of amino acid, it is possible to save the consumption of chemical fertilizers and produce economic yield in studied region. پرونده مقاله