Key Words and Phrases: - eCommons@Cornell - Cornell University

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- -, I • Mound 20 1- Ridge - ~ Flat Furrow ,...--- ~ 5 1- - 0 Figure 4. Effect of plant bed configuration on the tuber yield of yam (D. aJata) at PRCRTC in Leyte, Philippines. Source: Villanueva, 1986.
Mound size A = Flat B = Small mound C = Medium mound D • Large mound D No Fertilizer ~ + Fertilizer D D D D -(\1 .c -... :2 .~ > .. ~ ::s ... E "' D lbadan soil ( Ieamy sand ) · Egbeda soil Alagba soil ( sandy loam/clay. loam ) ( sandy loam ) Figure 5. Effect of mounds size and application of fertilizers on the yield of yam (Q. rotundata) in three soils of Southern Nigeria. Source: Kang and Wilson, 1982.
Page 1 and 2: -1- TILLAGE SYSTEMS FOR ROOT AND TU
Page 3 and 4: -3- B. Cassava: 9assava is grown on
Page 5: -5- prior to planting of an individ
Page 8 and 9: -8- In large plantations in Barbado
Page 10 and 11: -10- contents. Ohiri (1983) found t
Page 12 and 13: -12- Chinese island of Hainan, whil
Page 14 and 15: -14- and Okigbo (1980) found that i
Page 16 and 17: -16- with no gravel. Both the lbada
Page 18 and 19: -18- REFERENCES Abenoja, E.A. and J
Page 20 and 21: -20- Ezumah, H.C. and D.L. Plucknet
Page 22 and 23: -22- Lal, R. and S.K. Hahn. (1973).
Page 24 and 25: -24- Opara-Nadi, 0. and R. Lal. (19
Page 26 and 27: -26- Vine, P.N. (1980). Soil manage
Page 28 and 29: -28- Table 2. Major root crops base
Page 30 and 31: -30- Table 4
Page 32 and 33: -32- Table 6. Effect of method of l
Page 34 and 35: -34- Table 8. Effect of various til
Page 36 and 37: -36- Table 10. Effect of land prepa
Page 38 and 39: -38- Table 12. Effect of tillage on
Page 40 and 41: -40- Table 14. Effect of land prepa
Page 42 and 43: "G = with ridges - 0 • ~ 15~~~~~~
Page 46: .. t NT- No Tillage MT- Minimum Ti

Key Words and Phrases: - eCommons@Cornell - Cornell University

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