COWPEA ( Vigna unguiculata (L.) Walp.aggreg.)
I. SEASON AND VARIETIES
| DISTRICT/SEASON | VARIETIES |
| Adipattam (June-August) | |
| For all districts except Kanyakumari and Nilgiris | Co(CP) 7, Paiyur 1, VBN 1 |
| Purattasipattam (September - November) | |
| Vellore, Thiruvannamalai, Dharmapuri, Salem, Namakkal, Perembalur, Erode, Coimbatore, Madurai, Dindigul, Theni and Virudhunagar | Co(CP) 7, Paiyur 1 |
| Margazhi - Thaipattam (December – February) | |
| Kanchipuram, Thiruvallur, Vellore, Thiruvannamalai, Dharmapuri, Salem, Namakkal, Coimbatore, Erode, Madurai, Dindigul, Theni, Tiruchirappalli, Perambalur, Ariyalur, Karur, Pudukkottai, Tirunelveli and Thoothukudi | Co(CP) 7, VBN 2 |
II. PARTICULARS OF VARIETIES
| Particulars | Paiyur 1 | VBN 1 | VBN 2 | CO(CP) 7 |
| Parentage | Selection from VM 16 | Selection from T 85F 2020 | Selection from IT 81-D-1228-10 | Gamma mutant of CO 4 (20 Kr) |
| Year of release | 1985 | 1997 | 1998 | 2002 |
| 50% flowering(days) | 75 | 35 – 40 | 40-45 | 40 – 45 |
| Duration (days) | 90 | 55 – 65 | 75 - 80 | 70 – 75 |
| Grain yield(kg/ha) Rainfed | 900 | 950 | - | 1000 |
| Irrigated | -- | - | - | 1600 |
| Vegetable (Kg/ha) | ... | 10580 | - | |
| Plant height (cm) | 60 - 70 | 25 - 30 | 45 - 60 | 40 – 55 |
| Stem, branches | Erect | Erect green, 2 – 4 branches | Green erect, 2 – 3 branches | Green with purple ring at fruiting nodes, 5 – 8 branches |
| Leaves | Dark green leaflets possessing triangular white spots | Light green | Dark green trifoliate | Ovote, trifoliate, entire, green and glabrous |
| Colour of pods | Green | Greenish white | Light green | Green |
| Dry | Brown | Cream | Cream | Light brown |
| Colour of grain | Brick red | White | Ivory white, hilum with tan ring surrounded by brown band | Brownish white and squire shape |
| 100 grain wt (g) | 9.9 | 12 - 15 | 13 - 15 | 12 - 14 |