Gross margin analysis - rhizobium trials Samlaut 2008 Presented by Keo Kynal For Fiona Scott

Assumptions riel US$ Urea per kg 3,360 $0.82 Planting (person day) 12,750 $3.11 Weeding (person day) 12,667 $3.09 Maize harvest (60 kg bag) 3,000 $0.73 Harvesting (person day) 12,750 $3.11 Threshing (person day) 13,333 $3.25 Rhizobium cost (ha) $5.00

Seed prices riel/kg $/kg Maize 14,781 $3.61 Soybean 2,998 $0.73 Mungbean 3,125 $0.76 Peanut 4,733 $1.15

Grain prices riel/kg $/kg $/t Maize 418 0.10 101.83 Soybean 1,733 0.42 422.76 Mungbean 2,138 0.52 521.34 Peanut 2,325 0.57 567.07

Peanut harvest and threshing costs (people per ha per day) Yield Harvest Threshing Cost/ha ($) < 2 6 5 34.90 2-2.5 7 6 41.30 2.5-3 8 7 47.60 3-3.5 9 8 54.00 3.5-4 10 9 60.40 4-4.5 11 10 66.70 4.5-5 12 11 73.10 >5 13 12 79.50

Peanut input costs Operation Unit Unit No Value value of units riel $ First ploughing rai 40,000 6.25 250,000 60.98 Second plough rai 25,000 6.25 156,250 38.11 Seed kg 4,733 110 520,667 126.99 Planting p/d 12,750 10 127,500 31.10 1st weeding p/d 12,667 20 253,333 61.79 2nd weeding p/d 12,667 20 253,333 61.79 3rd weeding p/d 12,667 20 253,333 61.79 442.54 Harvest & threshing costs are not included here since they vary with yield

Soybean

Mungbean

Peanut

Issues Site 1 was damaged by pig and chicken – too close to house Site 2 may have been high fertility (no nitrate test) – soybean does not respond to inoculation under these conditions

Conclusions Gross margins: peanut ($1,500-2,000/ha)  mungbean ($690-871)  soybean ($230-300/ha)  Rhizobium inoculation increased peanut GM by $613/ha Rhizobium inoculation increased mungbean GM by $181/ha Soybean did not respond to inoculation (see issues) Small farmers have given up on mungbean because of high harvest and threshing costs and low yields

Thank you