This study was carried out to investigate the effect of compost and manure with phosphorus and zinc on potato yield (Solanum tuberosum L.). The experiment was conducted in the Kerman agricultural and natural resources research centre (Iran) by using a factorial design in randomized complete block in two independent experiments with three replications. In the first experiments compost with phosphorus and zinc were used, and in second experiment animal manure with phosphorus and zinc were used. The three levels of compost (0, 10 and 20 ton ha -1 ) and same level of animal manure were used as main. Four levels of phosphorus (0, 75, 150 and 225 kg ha -1 ) and two levels of zinc (0 and 50 kg ha -1 ) used as the sub factors. Results showed that the main factors of compost and animal manure application had no significant effect on any of the all evaluated traits in the experiments. Effect of zinc on number of small tubers was significant in the first experiment. The highest number of large tubers were found in 20 ton ha -1 compost + 225 kg ha -1 phosphorus + 50 kg ha -1 zinc in first experiment and 20 ton ha -1 animal manure + 75 kg ha -1 phosphorus + no zinc in second experiment. Tubers dry matter was significantly affected by the interaction effect of zinc and phosphorus, the maximum dry matter being obtained with the application of 225 kg ha -1 phosphorus +50 kg ha -1 zinc.

An experiment was conducted in the form of split-plot and random complete blocks with 3 repetitions in a greenhouse in Jiroft city of Kerman province, southeastern Iran, during 2011-2012 crop year, with the main aim to study how enriched organic fertilizer (chicken manure) and spraying methanol affects the quantity and quality of the yielding in Falcato tomato. Methanol and the enriched chicken manure as the two main and subordinate factors were studied in 4 levels (0, 20, 30, and 40 percentage of the volume) and (0, 500, 1500, and 2500 kg/ha). The results showed that the interaction of the two factors on the number of fruits per plant, the mean weight of fruit (p ≤ 0.05), and the stem diameter (p ≤ 0.01) was significant. Methanol 30% caused a 28% increase in yield, compared to the control plant. Adding 2500 kg/ha chicken manure resulted in 31% increase in the yield in contrast to the control plant. Mean weight of a fruit in 40% methanol and 2500 kg/ha chicken manure treatment was 145 g. Finally, having evaluated all aspects and factors in this study, methanol 30% solution and 2500 kg/ha chicken manure were recommended for Falcato tomato in greenhouses of Jiroft city.