The Residual Effects of Organic and Chemical Fertilizer of Spring Crop (Black Cumin) To Production of Pea (Pisum sativum) Green Manure

In sustainable agriculture, efficient use of the nutrients residues of fertilizers had superior importance to production of green manure. In order to utilize the organic and chemical fertilizer residue in black cumin (Nigella sativa L.) crop to green manure production of pea (Pisum sativum), the experiment was conducted at Shahrekord University during 2012-2013. Treatments included application of cattle manure (CM), urea (U), three ratios CM:U full dose application (2:1; 1:1;1:2), three ratios CM:U split application (2:1; 1:1;1:2), and unfertilized control to in previous crop (black cumin) in 2012. Pea seeds planted in 2013, and provided no additional manure or fertilizer. The results indicated that the residue of cattle manure and cattle manure: chemical fertilizer (2:1) produced the greatest of pea dry matter (3734 and 3526 kg.ha-1, respectively) at flowering stage. The greatest nitrogen concentration (51.1 and 50.3 g.kg-1 at before flowering and flowering stage, respectively), nitrogen uptake (176.2 kg.ha-1 at flowering stage) and N/P (13.3 at flowering stage) were obtained in the residue of split integrated fertilizer (2:1), however the maximum of phosphorus uptake (16.1 kg.ha-1 at flowering stage) observed in cattle manure residue. The lowest C/N (13.14 at before flowering stage) obtained in the residue of split integrated fertilizer (2:1). In general it can be concluded that the use of the applied fertilizers residue of previous crop, in addition to preventing the loss of nutrients is effective technique to improve the production and quality of green manure.